I have a very smart and curious 3 year old daughter. Before anyone tries to derail my query, yes, we get a lot of play time outside with soccer and baseballs, and inside with blocks, Hot Wheels, PlayDoh, etc. However, on the rare occasion that we do sit down with my iPad, I'd like to solicit recommendations for good Math and Science apps for kids. There are hundreds of horribly gender-biased baking apps and Barbie apps for young girls, but they turn my stomach. She has a wonderfully curious mind, and really likes SkyView already, but I feel lost in a sea of pink and Hello Kitty apps.